Hedman Hedders 65003 Full Length Long Tube Exhaust Headers Primary Collector Uncoated Steel - 1-3/4 3

The Hedman Hedders 65003 Standard Duty Full Length Exhaust Headers deliver exceptional performance improvements for classic Chevrolet small block applications. These long tube headers feature a handcrafted mild steel construction with mandrel-bent primary tubes that maximize exhaust flow and scavenging efficiency for excellent top-end horsepower and torque gains.

Key Specifications:

• Primary tube diameter: 1-3/4 inches (1.75")
• Collector diameter: 3 inches
• Reducer outlet size: 2-1/2 inches
• 18-gauge mild steel construction
• 5/16-inch thick flanges for secure mounting
• Full-length long tube design
• Down-swept tube direction

Innovative Ball and Socket Collector Design:

These headers utilize Hedman's gasketless ball and socket collector attachment system, which eliminates the need for collector gaskets and allows for greater exhaust system misalignment tolerance compared to traditional gasket-style collectors. This design reduces potential leak points and simplifies installation.

Complete Installation Kit:

Each set includes headers (sold as a pair), ball and socket reducers (exhaust adapters), header-to-head gaskets, all necessary mounting hardware and bolts, plus detailed installation instructions. The headers come with temporary black paint for pre-installation protection only—this factory paint is not high-temperature rated and will burn off during initial use.

Warranty and Quality:

Hedman Hedders backs these headers with a limited lifetime warranty on construction, guaranteeing them to be free from defects including cracks in tubes and welds. Made in the USA since 1954.

Important Notes:

• Uncoated mild steel construction—recommend applying high-temperature coating for maximum durability
• Compatible with air conditioning, power steering, and both automatic and manual transmissions
• Not legal for street use on 1975 and later model year vehicles—off-road and racing use only
• Designed for vehicles without smog injection or injection heads
• Will fit with angle plug aluminum heads (Chevy only)